Azurerm_container_group deploys a container but sticks on "Still creating..." and eventually errors

This just started happening yesterday and hasn’t resolved itself, so it seems like the connector has become incompatible with some change in Azure?

We’re on the latest hashicorp/azurerm 3.14.0. Previously tried 3.5.0 which has same issue.

Container instances actually deploy successfully in a couple of minutes as usual, but the terraform connector can no longer detect that this has happened and endlessly waits with “Still creating…” It times out after 30 minutes.